Question

Barry is trying to calculate the distance between point E(3, 1) and point F(4, 7). Which of the following expressions will he use?

square root of the quantity of 7 minus 1 all squared plus 4 minus 3 all squared
square root of the quantity of 7 minus 3 all squared plus 4 minus 1 all squared
square root of the quantity of 7 minus 4 all squared plus 3 minus 1 all squared
square root of the quantity of 4 minus 7 all squared plus 1 minus 3 all squared

Answer 1

A

Answer 2

@mathisfun007 could you explain please?

Answer 3

(x1,x2) and (y2,y1) then distance D =Sqrt{(x2-x1)^2+(y2-y1)^2}